The objective of the research project GeoTief was to develop an automatic sampler for all types of low-enthalpy fluids (cold groundwater and thermal water of hot springs and geothermal wells) and an automated data processing software for all types of geothermal fluids (low- and high-temperature resources). The automatization of sampling is beneficial for long-term monitoring of groundwater wells (environment) and hot springs at the flank of volcanoes (hazard assessment) as well as for individual sampling by less experienced geoscientists and assures a reliable and reproducible sampling procedure.

The sampler was tested at three groundwater wells in Germany. The analytical results of the samples taken automatically were crosschecked with manually sampled fluids of the same site. To our satisfaction, the laboratory analyses showed better results with the automatic sampling device!